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225 Commits

Author SHA1 Message Date
Robert Baldyga
92c7e12549 Remove core id from public API 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2019-07-30 09:26:26 +02:00
Robert Baldyga
1100cb0b4f Remove cache id from public API 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2019-07-30 09:26:26 +02:00
Robert Baldyga
259df7ace9 Store core name in metadata 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2019-07-30 09:26:26 +02:00
Robert Baldyga
eb4272afa9 Store cache name in metadata 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2019-07-30 09:26:17 +02:00
Robert Baldyga
4f0735b503 Ensure that core name is set and unique 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2019-07-29 17:37:48 +02:00
Robert Baldyga
901b39031f Ensure that cache name is set and unique 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2019-07-29 17:37:43 +02:00
Robert Baldyga
331b99397f Change ctx lock to rmutex 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2019-07-29 15:08:44 +02:00
Kamil Łepek
05be67a72b
Merge pull request #220 from arutk/metadata_offset_hash 
New hash function formula
 2019-07-29 13:03:04 +02:00
Jan Musiał
fa14d6a4b5
Merge pull request #221 from arutk/metadata_rename_concurrency 
Restrutcure concurrency code
 2019-07-29 09:42:37 +02:00
Robert Baldyga
3355a6cd56 engine: discard: Add missing put on error path 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2019-07-27 19:06:11 +02:00
Adam Rutkowski
494861c994 Rename cache_concurrency to cache_line_concurrency 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2019-07-24 15:32:12 -04:00
Adam Rutkowski
e5bed8825c Move metadata concurrency to a separate file 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2019-07-24 15:32:09 -04:00
Adam Rutkowski
3dd4263bc8 Change hash function 
Modify ocf_metadata_hash_func to return consecutive (modulo @hash_table_entries)
values for consecutive @core_line_num. This way it is trivial to sort all
core lines within a single request according to their hash value. This kind
of sorting will be required to assure that future hash bucket metadata locks
are always acquired in fixed order, eliminating the risk of dead locks.

This change is part of fine granularity metadata lock implementation.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2019-07-24 15:02:34 -04:00
Adam Rutkowski
7184f7787c Cleanup map_info struct 
1. Rename hash_key -> hash
2. Better comments for hash and coll_idx

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2019-07-24 13:12:05 -04:00
Michal Rakowski
aa02f56b05
Merge pull request #218 from robertbaldyga/rm-includes-metadata-superblock 
Remove unneeded includes in metadata_superblock.h
 2019-07-23 13:56:39 +02:00
Jan Musiał
1fd1a6fe17
Merge pull request #209 from arutk/stop_no_queue 
Allow to stop cache without management queue
 2019-07-23 13:51:21 +02:00
Robert Baldyga
ab2f8b199a Remove unneeded includes in metadata_superblock.h 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2019-07-23 13:00:05 +02:00
Jan Musiał
232f0cd8d7
Merge pull request #216 from robertbaldyga/io-and-req-in-single-allocation 
Allocate io and req in single allocation
 2019-07-23 11:40:30 +02:00
Jan Musiał
08abf69224
Merge pull request #217 from Open-CAS/remove-redundant-field 
Remove redundant field from struct ocf_cache_device
 2019-07-23 09:55:03 +02:00
Jan Musial
917cbd859a Add promotion policy API and use it in I/O path 
Promotion policy is supposed to perform ALRU noise filtering by
eliminating one-hit wonders being added to cache and polluting it.

Signed-off-by: Jan Musial <jan.musial@intel.com>
 2019-07-19 13:52:00 +02:00
Robert Baldyga
6822ab6140 Remove redundant field from struct ocf_cache_device 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2019-07-19 12:59:14 +02:00
Robert Baldyga
e64bb50a4b Allocate io and request in single allocation 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2019-07-17 10:31:23 +02:00
Robert Baldyga
61414f889e Introduce OCF IO allocator 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2019-07-17 10:31:23 +02:00
Robert Baldyga
e254c9b587 Merge new_io and configure into one function 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2019-07-17 10:31:23 +02:00
Robert Baldyga
4d2d31ff76 Introduce ocf_io_internal 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2019-07-17 09:54:51 +02:00
Adam Rutkowski
4f04b2762f Simplified stop path for cache detached case 
When cache is detached we cannot assume there is a management
queue created. This change introduces simplified cache stop
path, performing all the necessary deinit without using
IO queues.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2019-07-08 18:26:35 -04:00
Michal Mielewczyk
636834dae3 Check for existing metadata when attaching cache. 
Instead of overriding existing metadata silently, return appropriate error.

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2019-07-08 09:23:32 -04:00
Jan Musial
aab3c4fbaa Fix typo in metadata_hash_entries fcn 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2019-07-04 14:01:27 +02:00
Jan Musial
ede2bcdf48 Fix volumes deinit routine 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2019-06-28 13:03:14 +02:00
Jan Musiał
e7e0ad957d
Merge pull request #201 from mmichal10/fix-load-error-handling 
Fix error handling in case of failed load
 2019-06-26 12:24:02 +02:00
Jan Musial
2c629be4c2 Fix leaking front and core volumes 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2019-06-26 10:00:49 +02:00
Michal Mielewczyk
52f6d6280b Fix error handling in case of failed load 
Store default metadata values and restore them in case of failed load.

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2019-06-25 09:31:05 -04:00
Jan Musial
4a20ce9c25 Fix leaking cache references 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2019-06-25 11:43:28 +02:00
Michal Rakowski
b1a6c467a0 Introduce core_is_dirty mngt method 
Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>
 2019-06-25 09:12:44 +02:00
Michal Rakowski
a818ffabfd Move ocf_mngt_cache_is_dirty to public mngt interface 2019-06-24 15:23:06 +02:00
Michal Rakowski
2925147395 Remove reduntant dirty check 
When flush completion is called there could be some clines marked as dirty since those could be in-use during flushing.
 2019-06-24 14:24:34 +02:00
Jan Musial
aec01f216c Revert "Disallow ocf_cache_mode_max in io_class config" 
This reverts commit 5ad5c521df.

This change broke setting IO-classes with allocation. We use max as a
special value to indicate that the partition should use cache global
caching mode.
 2019-06-14 14:08:28 +02:00
Michał Mielewczyk
f9f75e7265
Merge branch 'master' into wo_improvements 2019-06-13 11:32:06 +02:00
Adam Rutkowski
6bb1d21489 Do not repartition cachelines in WO read 
WO cache mode should not repartition cachelines nor affect cacheline
status in any way when servicing read. Reading data from the cache
is just an internal optimization. Also WO cache mode is designed to
be used with partitioning based on write life-time hints and read
requests do not carry write lifetime hint by definition.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2019-06-13 13:14:30 -04:00
Michal Mielewczyk
e8b24d811b Check if all required ops are provided by adapter. 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2019-06-13 04:46:03 -04:00
Adam Rutkowski
9dc1381b77 Refactor ocf_submit_cache_reqs map indexing 
Refactoring ocf_submit_cache_reqs to make it clear that
req->map is accessed at index derived from offset argument,
not necesarily starting at 0.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2019-06-12 18:56:40 -04:00
Adam Rutkowski
b82ed3af26 Initialize @increment in ocf_read_wo_cache_do 
Static code analyzers fail to understand that this variable
is always assigned to before usage.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2019-06-12 13:44:01 -04:00
Adam Rutkowski
b97bb6f53b Add function to check for lazy write cache mode (WO or WB) 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2019-06-12 12:07:02 -04:00
Adam Rutkowski
82e8c55f4a Write-only cache mode 
Write-only cache mode is similar to writeback, however read
operations do not promote data to cache. Reads are mostly serviced
by the core device, only dirty sectors are fetched from the cache.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2019-06-12 12:07:02 -04:00
Adam Rutkowski
ae6164a49c Helper functions to get request start/end sector in cacheline 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2019-06-12 12:07:02 -04:00
Michal Mielewczyk
328d27846a Prevent overriding null terminator in cache name 2019-06-11 12:12:07 +02:00
Michal Mielewczyk
46c17144f6 Remove redundant check for core id 2019-06-11 12:12:07 +02:00
Michal Mielewczyk
6cdbac82bc Check for valid core_id value 2019-06-11 12:12:07 +02:00
Michal Mielewczyk
fc5334e419 Return memcpy result 2019-06-11 12:12:07 +02:00
Michal Rakowski
29199cb5d4 Added missing metadata_unlock 
Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>
 2019-06-11 12:12:07 +02:00